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Sphingomyelins and ceramides of umbilical cord tissues and their alterations in preeclampsia

100%

Romanowicz L.

nr Supplement 4

Extracellular matrix-bound insulin-like growth factor-I in the skin of control and fasted rats

63%

Ciechowska-Pasko M. , Romanowicz L.

nr Supplement 1

Metalloproteinases of umbilical cord preeclampsia

51%

Galewska Z. , Romanowicz L. , Gogiel T. , Jaworski S.

tom 53

nr Supplement 1

Differential distribution of cathepsin B in human umbilical cord tissues

51%

Gogiel T. , Galewska Z. , Romanowicz L.

nr 4

The extracellular matrix components are differentially distributed among various structures of the umbilical cord. Wharton's jelly is especially rich in collagens and growth factors. Cathepsin B is a major cysteine protease involved in collagen degradation, as well as in the activation of precursor forms of other collagenolytic enzymes and growth factors. We assessed the activity and expression of cathepsin B in the umbilical cord arteries, veins and Wharton's jelly. Extracts of separated umbilical cord components were subjected to an activity assay with the use of specific fluorogenic substrate. The expression of cathepsin B protein was qualitatively evaluated by Western immunoblotting and quantitatively determined with an immunoenzymatic method. The total cathepsin B activity and content calculated per gram of DNA were higher in Wharton's jelly than in the umbilical cord vessels, and the latter parameter was the lowest in the umbilical cord arteries. Moreover, the expression and the activity of latent cathepsin B (following activation by pepsin digestion) calculated per gram of DNA were the highest in Wharton's jelly and the lowest in the umbilical cord arteries. High expression and activity of latent, pepsin-activatable cathepsin B related to DNA content in Wharton's jelly seem to reflect the stimulation of its cells by high amounts of collagen I and growth factors.

Sphingoid derivatives of umbilical cord artery, vein and Wharton’s jell

51%

Romanowicz L. , Galewska Z. , Bankowski E. , Jaworski S.

nr Supplement 1

Glycosaminoglycans of umbilical cord arteries and their alterations in EPH-gestosis

51%

Romanowicz L. , Bankowski E. , Jaworski S. , Chyczewski L.

tom 32

nr 3

Alterations in collagen of umbilical cord arteries in patients with EPH-gestosis

51%

Bankowski E. , Romanowicz L. , Jaworski S.